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Three circles are placed on a plane in s...

Three circles are placed on a plane in such a way that each circle just touches the other two, each having a radius of 10 cm. Find the area of region enclosed by them.

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RD SHARMA-AREAS RELATED TO CIRCLES-All Questions
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  13. In Fig. 15.82, A B C D is a rectangle, having A B=20\ c m and B C=1...

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  14. The diameter of a coin is 1 cm (Fig. 15.83). If four such coins be ...

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  15. From a circular piece of cardboard of radius 3 cm two sectors of 90^@ ...

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